Pl tronics, Inc.
.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
PE1145T LV PECL Series
6 Pad Leadless Surface Mount Oscillator
Differential LV PECL Output
Enable/ Disable Function
–
170.00 MHz 650.00 MHz
Alternate Pinouts Compatible with All Major Suppliers Available
Consult factory for higher frequencies
Standard Specifications
Overall Frequency Stability
PE1145T: ± 50 PPM, PE1144T: ± 25 PPM, PE1120T: ± 20 PPM over Operating Temp. Range
-
°
Operating Temperature Range 0 to +80 C is standard, but can be extended to 40 to +85°C for certain frequencies
Supply Voltage (Vcc)
Supply Current (Icc)
Jitter
3.3 volts ± 10% standard, but 5.0 volts or 2.5 volts also available
115 mA typical, 130 mA maximum
Consult factory
Output Load
Output must be terminated into 50 ohms to (Vcc - 2.0 V). See Test Circuit 5 and Note 1.
Output enabled when Pin #2 is open or at CMOS Logic “1”;
Output disabled when Pin #2 is at CMOS Logic “0”.
Enable/Disable Option (E/D)
(250 to 500 MHz only)
Symmetry
Tr & Tf
Logic “1”
45/55% to 55/45% at 50% of Vcc level standard, tighter symmetry available
300 pS max (20 to 80%)
Vcc - 1.025 volts minimum
Output Waveform
PECL with Differential Output
(see Waveform 2)
Logic “0”
Vcc - 1.620 volts maximum
Note 1: In the typical PECL 100K logic output Voh is 2.35 volts and Vol is 1.60 volts at 3.3 Vcc. The center voltage of the PECL is therefore1.975 volts.
If a 50 resistor is placed between the output and Vcc – 2 volts (1.3 volts), the current through the resistor is (1.975 – 1.3) / 50 = 13.5 mA.
W
±
The same load can be simulated by a resistor of 147 1% ohms to ground (1.975 / 0.0135 = 146.29 ohms). If additional load current is placed
on the output, its load current must be subtracted from the 13.5 mA to calculate a new load resistor. Using similar calculations, use 274 ± 1%
ohms to ground for 5.0V operation.
Part Numbering Guide
Portions of the part number that appear after the frequency may not be marked on part (C of C provided)
PE11 45 T Y - 350.0M - XXX (Internal Code or blank)
Packaging
Tube or
Model
Frequency in MHz
24mm tape
16mm pitch
PE11 = Std Pinout
PE3X = Alt Pinout
Special Specifications (choose all that apply)
°
E: Extended Operating Temperature Range (- 40 to +85 C)
F: 47.5 /52.5% Symmetry at 50% of Vcc
V: Supply Voltage of 3.3 volts ± 10%
Frequency Stability
45 = ± 50 PPM
44 = ± 25 PPM
20 = ± 20 PPM
W: Supply Voltage of 2.5 volts ± 5%
Y: Supply Voltage of 5.0 volts ± 10%
Consult factory for available frequencies and specs. Not all options available for all frequencies. A special part number may be assigned.
Frequency Stability is inclusive of frequency shifts due to calibration, temperature, supply voltage, shock, vibration and load
Mechanical: inches (mm)
not to scale
Solder Pads
Due to part size and factory abilities, part marking may vary from lot to lot and may contain our part number or an internal code.
Vcc
QN
Q
6
5
4
4
5
6
PLE
For Best Performance,
.05
(1.3)
Do NOT allow any traces other
than ground under oscillators
(Even in buried layers). See
Page 3A for layout guidelines.
1
3
2
1
2
3
N.C.
GND E/D
or
.560 (14.23) MAX
.195 (4.95)
MAX
.200 (5.08)
N.C.
Jan 2003
Consult factory for alternate pinout
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
4
Pl tronics, Inc.